3M 7000121121 Cross Buff 2in 2PLY 8-32 High Strength Medium

Product Description

The 3M 7000121121 is a Scotch-Brite Cross Buff designed for cleaning and polishing inside diameters in demanding production environments. Measuring 2 inches in diameter by 0.5 inches wide, this 2-PLY unit mounts on an 8-32 threaded mandrel and is built from High Strength Medium abrasive material. The staggered, 2-PLY web construction delivers consistent contact and extended service life compared to single-ply alternatives. It is used by machinists, aerospace technicians, and automotive production workers who need reliable surface finishing results inside tight bores and cylindrical passages.

This Cross Buff is suited for inside-diameter work on lifter bores, valve bodies, valve spools, dies, molds, and tubing. Typical applications include deburring, satin finish work, denib and defuzz operations, surface oxidation and rust removal, corrosion removal, and surface preparation prior to coating. The High Strength Medium abrasive grade makes it effective in both aerospace and automotive production settings where consistent material removal and finish quality are required across high-volume runs.

Key Features

• 2-inch diameter by 0.5-inch width for inside-diameter finishing operations
• 2-PLY staggered web design provides uniform contact and consistent performance
• 8-32 threaded mount for secure attachment to standard mandrels
• High Strength Medium Scotch-Brite abrasive material handles deburring, satin finishing, and surface prep
• Effective on rust, oxidation, and corrosion removal prior to coating
• Suited for aerospace and automotive production applications

Compatibility

Designed for use on standard 8-32 threaded mandrels in rotary tool setups for inside-diameter finishing of bores, valve bodies, valve spools, dies, molds, and tubing in aerospace and automotive production environments.

Installation Notes

Installation is performed by machinists or surface finishing technicians using a compatible 8-32 threaded mandrel mounted in a drill press, lathe, or rotary hand tool. Ensure the workpiece is secured and the tool is set to an appropriate RPM before engaging the buff. Wear appropriate eye protection and follow facility safety procedures when operating rotary abrasive tools. Do not exceed the maximum rated speed for the buff or the mandrel.

Technical Specifications

• Diameter: 2 inches
• Width: 0.5 inches
• Ply: 2 PLY
• Thread Mount: 8-32
• Abrasive Grade: High Strength Medium
• Weight: 0.04 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 25
• UPC: 00048011643120

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121121